Automatic brake mechanism.



EDWARD T. CONDON, JR.. OF NEW YORK, N; Y., ASSIGNOR T0 CONDON-AUTOSTOP CGMPANY, A CORPQRATION OF NEW YORK.

AUTOMATIC BRAKE MECHANISM.

Specification of Letters Patent.

Patented June 13, 1916.

1'0 all w kom it may concern Be it known that l, EDWARD T. CoNnoN, Jr., a citizen of the United States, residing inthe city of New York, in the county and State of New York, have invented certain new and useful Improvements in Automatic Brake Mechanism, of which the following is a specification.

My present invention relates to automatic brake mechanism designed particularly for use in connection with talking machines of the type in which a rotary disk reco d is employed, although it may he found useful in other and different connections.

The object of the invention is to provide a brake mechanism which is simple and inexpensive and can readily he attached to any standard talking machine of the rotary disk type and which, without adjustment or regulation, will automatically apply the brake and stop the machine when the end of ay selection, is reached, notwithstanding variationsv in the pitch of the sound-groove of the record used and no matter how long or how short the selection may be.

To this end the invention consists, broadly stated, in a brake member which is supported by and travels with one moving memloer, such as the sound-arm of a talking marhine, and is normally held in inoperative position. and in means actuated on the stopping of such moving" meniher for bringing the brake into operative position in Contact with another moving membenthe re\olving turni `aiile of the talking' marhine for example, to stop such other member.

lt also comprises the novel features of construction, arrangement, and combinations of parts hereinafter fully described and more particularly pointed out in the claims.

ln the accompanying drawings, forming a part of this specification, Figure 1 is a plan view of one specific embodiment of my improved lil-alie mechanism as applied to a standard talking mal-hina, with broken porv tions` of such parts of the .machine as are nrrossary to show the operative relationship ol' the hrt-.loix .mechanism therm ith; Fig. j. a virili-al fsw-tion on the line 2 of l4 in. i. in thel direc n indicated hy arrows; and Vig. Si. a ierliral section on the line 3 f3 of Fig. i, also in the direrilion indu-ated by arrows.

The same reference numerals indicate like parts throughout the several figures of the drawings.

As here shown, 1 is the usual rotary turntable, 2 is a disk record supported thereon and revolving therewith, and 3 is the usual sound-arm which, when the machine is in operation, is swung inwardly by the needle which rests in the spiral sound-groove of the record. Mounted upon the sound-arm by the strap L'l is an armihaving a horizontal component 5 fhifh extends forwardly under the soundairnl `oetween the top of the motor cabinet (not shown) and the turn table. To the forward end of this arm is pivoted, at 46, the brake member 7, consisting or two arms T1" and 7 which extend oppositely at an angle to each other and are so proportioned that the upper side of the arm Y, preferably provided with a shoe or covering ol rubher, or other suitable frictional material, is normally held by gravity in a substantially horizontal position in proximity to hut outof coi'itact'with the turn-table above while the arm 7, tapering'to a sharp toothed edge at its outer end, projects down-y wardly, shown in Fig. 2. Upon the baseplate 8, which is attached by screws or other suitable means to the top of the motor cabinet not shown), is pivotally mounted a sprocket wheel 9, with a tooth of which a finger 10 screwed or otherwise suitably se.V

cured to the under side of the turn-table engages on each revolution of the turntable and so causes it to rotate. The. pinion il. mounted upon the same pivot as and to rotate with the sprocket wheel, meshes with gear 12 which rotates with the pinion 13 upon a post 14 secured to the base-plate. A. lever 15 is mounted between the gear 12 and pinion 13 to turn upon the huh 13 on the latter-,and to one of its arms is attached a spring 16 while the gear 17 is pivotally mounted upon its other arm and thereby held in mesh with the pinion 13. The gear 1'? is normally held by the spring 16 in mesh with the segmental rack 19, which, provided on its lower side with a f trved longitudinal flange 19 sliding in the segmental groove 2() in the hase-plate, is positioned immediately below the brake 7 and moves around the same center. The upper surface of the raclr is provided with fine transverse ratchet teeth Q1 with which the. toothed outer end of the downwardly projecting arm of the brake is adapted to engage.

The gears in the train actuating the rack are so proportioned that the rack will more more slowly, or at least no footer, than the brake, however high the pitch of the sonndgroove of the record used may be, anti the teeth on the upper surface of the rack are extended so that the downwardly projerting arm of the brake will always be in engagement therewith whenever the end of a selection, whether long or Short, is reached.

The operation of the device is as follows; lVhen the machine is started with the needle in the outer end of the spiral sonori-groove of therecord, the brake stands just ofi' the cnil of the segmental rack, to the right, with its horizontally extending arm held ontof Contact with the turntable by gravity, in the position indicated by [he dottori lines in Fig. 2. AS the sonnilmrm is swung in warcllj; by the needle. the brake moving with it will drag the toothed emi of its floii'nwarily projecting arm over the ratchet teeth on the upper surface of the more slowly moving rack until the needle reachesthc end of the sound-groove. Thereupon the sonmharm will cease to move, or remain stationary, anti the brake will be turned upon its pivot by the engagement of its downwardly project ing arm with a tooth on the still moving rack so es to bring its forwardly projet-,ting arm up into Contact with the rapidly revolving turntable which. by reason of the frictional Contact, will give a slight wedge action to the brakearm and be instantly stopped. To rele/ae the bmi-:o and start the machine again, it is only necessary to swing the mnd-arm hack to the rifht by hand. The downwardly projecting arm of the brake in engagement with a toolli on the rack will move the rack back to the right, tl'irowinnF the gear i? forward and out of mesh with the rack, until the longitudinal flange on the rai-lr strikes the end of the segmental slot in the basoplate and will then jump the small ratchet teeth to the end of the rack.

While I have explained the principle of my invention in connection with what l now consider the best mode in which to op ily thaty principle, it will, of course, be nnd rstood that the specific embodiment of the invention Shown and described can be greatly modified in its various parte anti details, within the scope of the appended claims, without departing from the spirit or sacrificing the advantages th amor.

What I claim as new, and le'sire to secure by Letters Patent, is-

1. ln a brake mechanism, the ron'ibination with two moving members of a brake which is mounted to be moved by one of said movingmembers and means rendered operative by the stopping' of said brake moving member to render said bra-lie operative to Stop the other moving member,

2. 1n a brake mechanism, the combination with two moving members of a brake for one member which is mounted to move with the other member anti which adapted to be actuated to stop the member to be braked only' when the Speed of the member by which ii is; moved falls lelow a certain i'iaefl minimmn relative to the speed of the member lo he liralefl,

in a brake mechanism, the combination with tvo moving members of a brake for one member which is mounted to move with the other`member and mechanical connee tions between the member to he brelred and the brake which are rendered operative to :ictnae the latter only when the member by which it is moved travelo at a` speed beliiw a fixed minimum relative to the speed of the member to be liralreci 4. In a brake mechanism, the combination with two moi/ingrl members adapted to trove-l one at substantially constant and the other at varying Spe-erle of a brake for said oonsaani, speed moving; member mounted zo in'oi'e with said varying speed member and rimane adapted to remain inoperative during niirinal variations in the speed of said varying!` epeefl moving;- member anil to be ren lured operative on the stopping thereof to poaiii'ely a ppljy' said brakito Stop said con etant sperrt moving iieniber.

Si. In a brake mechanism, the combination with two moving members adapted to travel one at a substantially constant and the other at iai-ying speeds oi' a brake member for the constant speed moving member mounted to be moved by said varying' speed member and a Second member mounted to be moved by Said constant speed moving member which inoperativeiy engages the bra kc member so long as said variable peeol' moving member i?, moving at a. Spee@` al. or above a normal minimum and on a reduction o its speed below :auchv nornml minimum is brought into operative engagement there with to actnate the brake member.

6. In a brake mechanism, the combination with two moving members adapted to travel one at a eubstantiaily constant speed and in so doing to drive the other member atjfarying speeds of a, brake member for the cony etant-.speed moving member and means for actuating the brake member which becon'iee operatively coupled therewith only whe varying speeii moving member is tr( .no

el', a Speed below a certain predetermined minimum relative to th speed of the etants'peefl 'mowingy member,

il in a brake mechanism, the corol'inaioo, with two independently moving members, oI a, brake member which is mounted to moi/e n In one moving' member in close prof/inne? moving? lll) to but not in Contact with the other moving member and means rendered operative by the stopping of tho first movingr nnfniber to bring the brake member into (-.ontznt with thv other moving memlier.

8. ln :l brake mechanism. thv combination, with :i traveling :rrm :ind u rewlving' fnolu, ol n brake member pivotzillv mounted upon und moving!v with thitravelingr :irm und held by gravity in close proximity to but, ont of Contact with the revolving trible, mcnnS bevoming operative upon tht` stopping of the trnvvling nrm to tnrn the brak@y member upon itiy pivot so as to bring it into rontnct with the revolving liable.

il. ln i brake merlninism. they combination` with :in arm traveling' in one dirffction und .i rotating tabler moving in the oppofsitfe dirwtion, of :i brake member pivotullv mount ml upon and moving with thel truvcling arm in proximity to the rotating' fabio but, lwld ont of contant, thvrmvith so longy :1S the t'rznviing nrm 'ontimns to mov. :1nd nii-:ins beroming opcrntivc upon thv Stopping of thv traveling l:irm to turn tin` bmkn mer-For upon it` pivm' into Contact with :xml bv auch rontnrt; to odge it against the rotating illdi.

ll). ln n brnlm,nwclninism, the combina tion, with :a traveling :ir i :idnplml to :novo in om` dira-tion ond a rotating' leilzh. moving 1n thv opposite dirmtion, of :i lnzilw menubar pivotcd upon and moving with tin traveling :irm sind prin idwl with two :irms which faro hold b v gravity one l'oiwvnidly vxtvndvd in proximity to but ont of rotating table und the othr downwardly und irzirwnrdly inclinvd, :i :sliding ruck positionrd below the brake mvmber :ind provided with rn'tclnft teeth daiptod to engage thc vnd ot' its; d'i\vn\v:irdl v proyiecting arm, :ind means nrtimted b v liu: rotating tublc for moving the ruck in the mmf: dirvction in whifh the traveling :irm in moved but :it :i lowar mito of spendA 1l, ln :1 briiko nmclnmiem, the conibinzition` with :1 traveling :irm moving normally in om` diruction und :1 rotating table moving in the opposite direction, of :i brake niinnber pivohilly mounted upon :1nd moving with the traveling :um and provided with two arms4 which :ir held by gravity ono, forwardly' @Xiondml in 'proximity to but ont of vonun-t with thv oppozlytcly moving rotating table :ind thc other downwnrdly :und rwxr- \,v:irdl v inulinid, :i `Sliding ruck' positioned lwlow the bruin* nwmbir und provided with rzitrhet nimh :nlnptml to rngugo tln end of its lownwzirdly proiorting :ii-m, :ind means m-timtcil bv ibo Vomiting: tnblv for moving the wirk in tlnt anniv dfwfion in which the trzlwling :ii-m nornmllv movin@y but :it :L lower rato of Spvod :md :idnptcd to dS- engage ihr rin-i( whrn thv trnvrling arm carrying with ii thtl rzirli is movvd in the oppor-:ite ilirrc'iion.

l ll)\\.\l1) T. ('NDU, Jn. [n prwunrw oli Wn. llr liVm'rNicv, FRANK SMIUMAN ci mtnct; with the 

